Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE
Engine Control System - SFI System Diagnostics (2 Of 4)
- DTC P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
- DTC P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
- DTC P0136 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2); DTC P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2); DTC P0138 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2); DTC P0139 Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2); DTC P0156 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2); DTC P0157 Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2); DTC P0158 Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2); DTC P0159 Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)
- DTC P0171 System Too Lean (Bank 1); DTC P0172 System Too Rich (Bank 1); DTC P0174 System Too Lean (Bank 2); DTC P0175 System Too Rich (Bank 2); DTC P1170 Port Injector Fuel Performance; DTC P117B Direct Injector Fuel Performance
- DTC P0190 Fuel Rail Pressure Sensor Circuit; DTC P0192 Fuel Rail Pressure Sensor Circuit Low Input; DTC P0193 Fuel Rail Pressure Sensor Circuit High Input
- DTC P0201 Injector Circuit / Open - (Cylinder 1); DTC P0202 Injector Circuit / Open - (Cylinder 2); DTC P0203 injector Circuit / Open - (Cylinder 3); DTC P0204 I Injector Circuit / Open - (Cylinder 4); DTC P0205 Injector Circuit / Open - (Cylinder 5); DTC P0206 Injector Circuit / Open - (Cylinder 6); DTC P0207 Injector Circuit / Open - (Cylinder 7); DTC P0208 Injector Circuit / Open - (Cylinder 8); DTC P062D Fuel Injector Driver Circuit Performance Bank 1; DTC P062E Fuel Injector Driver Circuit Performance Bank 2
- DTC P0230 Fuel Pump Primary Circuit
- DTC P0300 Random / Multiple Cylinder Misfire Detected; DTC P0301 Cylinder 1 Misfire Detected; DTC P0302 Cylinder 2 Misfire Detected; DTC P0303 Cylinder 3 Misfire Detected; DTC P0304 Cylinder 4 Misfire Detected; DTC P0305 Cylinder 5 Misfire Detected; DTC P0306 Cylinder 6 Misfire Detected; DTC P0307 Cylinder 7 Misfire Detected; DTC P0308 Cylinder 8 Misfire Detected
- DTC P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor); DTC P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor); DTC P032C Knock Sensor 3 Circuit Low; DTC P032D Knock Sensor 3 Circuit High; DTC P0332 Knock Sensor 2 Circuit Low Input (Bank 2); DTC P0333 Knock Sensor 2 Circuit High Input (Bank 2); DTC P033C Knock Sensor 4 Circuit Low Input; DTC P033D Knock Sensor 4 Circuit High Input
- DTC P0335 Crankshaft Position Sensor "A" Circuit; DTC P0337 Crankshaft Position Sensor "A" Circuit Low Input; DTC P0338 Crankshaft Position Sensor "A" Circuit High Input; DTC P0339 Crankshaft Position Sensor "A" Circuit Intermittent
- DTC P0340 Camshaft Position Sensor Circuit Malfunction; DTC P0342 Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); DTC P0343 Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor); DTC P0345 Camshaft Position Sensor "A" Circuit (Bank 2); DTC P0347 Camshaft Position Sensor "A" Circuit Low Input (Bank 2); DTC P0348 Camshaft Position Sensor "A" Circuit High Input (Bank 2)
- DTC P0351 Ignition Coil "A" Primary / Secondary Circuit; DTC P0352 Ignition Coil "B" Primary / Secondary Circuit; DTC P0353 Ignition Coil "C" Primary / Secondary Circuit; DTC P0354 Ignition Coil "D" Primary / Secondary Circuit; DTC P0355 Ignition Coil "E" Primary / Secondary Circuit; DTC P0356 Ignition Coil "F" Primary / Secondary Circuit; DTC P0357 Ignition Coil "G" Primary / Secondary Circuit; DTC P0358 Ignition Coil "H" Primary / Secondary Circuit
- DTC P0365 Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0367 Camshaft Position Sensor "B" Circuit Low Input (Bank 1); DTC P0368 Camshaft Position Sensor "B" Circuit High Input (Bank 1); DTC P0390 Camshaft Position Sensor "B" Circuit (Bank 2); DTC P0392 Camshaft Position Sensor "B" Circuit Low Input (Bank 2); DTC P0393 Camshaft Position Sensor "B" Circuit High Input (Bank 2)
- DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430 Catalyst System Efficiency Below Threshold (Bank 2)
- DTC P043E Evaporative Emission System Reference Orifice Clog Up; DTC P043F Evaporative Emission System Reference Orifice High Flow; DTC P2401 Evaporative Emission Leak Detection Pump Stuck OFF; DTC P2402 Evaporative Emission Leak Detection Pump Stuck ON; DTC P2419 Evaporative Emission System Switching Valve Control Circuit Low
- DTC P0441 Evaporative Emission Control System Incorrect Purge Flow
- DTC P0451 Evaporative Emission Control System Pressure Sensor Range / Performance; DTC P0452 Evaporative Emission Control System Pressure Sensor / Switch Low Input; DTC P0453 Evaporative Emission Control System Pressure Sensor / Switch High Input
- DTC P0455 Evaporative Emission Control System Leak Detected (Gross Leak); DTC P0456 Evaporative Emission Control System Leak Detected (Very Small Leak)
- DTC P0500 Vehicle Speed Sensor "A"
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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